Common Regular Expressions

In the process of developing automated test scripts, it is a good solution to use regular expression fuzzy matching to solve the recognition and validation of property-like objects, and there are too many regular expression categories to summarize the most commonly used categories of work:

Metacharacters	Describe
\	Marks the next character as a special character, or a literal character, or a backward reference, or an octal escape. For example, "\\n" matches \ n. "\ n" matches the line break. The sequence "\ \" matches "\" and "\ (" Matches "(".
. Point	Matches any single character except for "\ r \ n". To match any character that includes "\ r \ n", use a pattern like "[\s\s]".
*	Matches the preceding sub-expression 0 or more times (greater than or equal to 0 times). For example, zo* can match "Z", "Zo" and "Zoo". * Equivalent to {0,}.
+	Matches the preceding subexpression one or more times (greater than or equal to 1 times). For example, "zo+" can Match "Zo" and "Zoo", but not "Z". + equivalent to {1,}.
^	Matches the starting position of the input string. If the multiline property of the RegExp object is set, ^ also matches the position after "\ n" or "\ r".
[A-z] [A-z]	The character range. Matches any character within the specified range. For example, "[A-z]" can match any lowercase alphabetic character in the range "a" to "Z". Note: The range of characters can be represented only if the hyphen is inside a character group and appears between two characters; If the beginning of a character group, it can only represent the hyphen itself
[^a-z] [^a-z]	A negative character range. Matches any character that is not in the specified range. For example, "[^a-z]" can match any character that is not in the range "a" to "Z".
[0-9]	The number range. Matches any number in the specified range. For example, "[0-9]" can match any number in the range 0 to 9.
[^0-9]	Negative numeric range. Matches any character that is not in the specified range. For example, "[^0-9]" can match any character that is not in the range 0 to 9.
\d	Matches a numeric character. equivalent to [0-9].
N	N is a non-negative integer. Matches the determined n times. For example, "o{2}" cannot match "O" in "Bob", but can match two o in "food".
{N,}	N is a non-negative integer. Match at least n times. For example, "o{2,}" cannot match "O" in "Bob", but can match all o in "Foooood". "O{1,}" is equivalent to "o+". "O{0,}" is equivalent to "o*".
{N,m}	Both M and n are non-negative integers, where n<=m. Matches at least n times and matches up to M times. For example, "o{1,3}" will match the first three o in "Fooooood". "o{0,1}" is equivalent to "O?". Note that there can be no spaces between a comma and two numbers.
\D{4}	Match 4 numeric characters
X|y	Match x or Y. For example, "Z|food" can match "Z" or "food". "(z|f) Ood" matches "Zood" or "food".
[XYZ]	The character set is combined. Matches any one of the characters contained. For example, "[ABC]" can Match "a" in "plain".
[^XYZ]	Negative character set. Matches any character that is not contained. For example, "[^ABC]" can match "Plin" in "plain".

Common Regular Expressions